THERMODYNAMICS OF BINARY-MIXTURES CONTAINING ORGANIC CARBONATES .6. ISOTHERMAL VAPOR-LIQUID-EQUILIBRIA FOR DIMETHYL CARBONATE + NORMAL ALKANES

Vapor and liquid equilibrium phase compositions were determined at 298.15 K for binary mixtures containing dimethyl carbonate and n-hexane, n-octane or n-decane. The direct experimental isothermal x-y data have been reduced to obtain the molar excess Gibbs energies G(E) by means of an iterative procedure similar to the Barker's method, using the Redlich-Kister equation with coefficients determined by regression through minimization of the sum of deviations in vapor-phase compositions. The data were compared on the basis of the DISQUAC group contribution model. Previously published data on vapor-liquid equilibria of dimethyl carbonate and cyclohexane, benzene or tetrachloromethane have been reduced with the same method.